Big Blowout Falls is a waterfall on East Fork Big Blowout Creek in King County, Washington, in the North Cascades region, with a total height of about 107 feet. It lies about 6.7 miles northeast of Tanner and roughly 22.4 miles east of Sammamish as the crow flies.
At 107 feet it is taller than the typical Washington waterfall of about 82 feet, ranking 383rd of 941 with a recorded height. The tallest single drop is 48 feet. The water comes down as a tiered waterfall, falling in several distinct steps one after another, combined with a horsetail character. It falls in 3 drops.
The North Cascades are a wilderness of jagged peaks, glaciers and deep, forested valleys of western hemlock, silver fir and Douglas fir, with some of the heaviest snowfall in the country. Meltwater from glaciers and snowfields pours down thousands of feet of cliffs in countless cascades and horsetail falls. East Fork Big Blowout Creek carries 2 recorded waterfalls; the biggest of them reaches 160 feet.
There are 236 recorded waterfalls in King County. Vortex Falls, a 160-foot segmented horsetail waterfall, is under a mile away. Switchback Falls, a 52-foot tiered cascade waterfall, is under a mile away. Gossamer Falls, a 102-foot veiling horsetail waterfall, is under a mile away.
Big Blowout Falls is located at 47.5309° N, 121.6285° W. The listing is based on the World Waterfall Database, one of the sources compiled by the U.S. Geological Survey in its inventory of waterfalls and rapids of the conterminous United States. The exact position has not yet been verified on aerial imagery, so treat the map pin as approximate. Details on trails, parking and access have not been documented for this waterfall yet.